Golf ball



Oct. 27, 1925'- H. F. MITZEL GOLF BALL 7 Filed Oct. 6, 1922' PatentedOct. 27, 1925.

UNITED STATES PATENT QFFICE.

HARVEY F. MITZEL, F PROVIDENCE, RHODE ISLAND, ASSIGNOR, BY MESNEASSIGN-- MENTS, OE ONE-HALF TO THE GOLF BALL CORPORATION OF AMERICA, OFWIL- MINGTOEN, DELAWARE, A CORPORATION OF DELAWARE. V I

com BALI.

Application filed October 6, 1922. Serial No. 592,751.

To all whom it may concern:

Y Be it known that I, HARVEY F. MITZEL, a citizen of the United States,residing at Providence, in the county ofProvldenoe and State of RhodeIsland, have invented certain new and useful Improvements in Golf Balls,of which the following is a specification. Y

\ My invention relates to golf balls and has 1 for its essential objectsthe avoidance of the disadvantages inherent in balls having cores,either solid or soft centered, and in balls characterized by windings ofrubber thread under tension or the like; to insure a resiliency equal orsuperior to a wound ball while possessing a consistency dens ty, orsolidity which enables the ball to withstand blows and hard usagewithout becoming misshapen or nonround, so that a perfeet balance isinsured in flight and putting;

to insure a thorough adhesion or amalgamation of the cover and body ofthe ball;

and to attain these ends in a structure simple in character and facileand inexpensive to construct.

To the above ends essentially my invention consists in such parts andcombinations of parts and in such characteristic features as fall withinthe scope of the appended claims. v

In the accompanying drawings which form a part ofthis specification,

Figure 1 is a side elevation of a golf ball embodying my invention.

Figure 2 is a detail view of the disassembled constituent original partsof the same,

and

Figure 3, a section on line of Fig-' ure'l.

Like reference characters indicate like parts throughout the views.

My ball comprises a spherical body 4.- of vulcanized material possessinga great degree or hardness combined with a measurev of resiliency, suchas 1S afforded by a vul-" canizedj combination of balata and rubber. Thesurface is roughened bycorr'ugations 5 or otherwise. A cover for thebody is provided cdiiiprising hemispherical sections '1 I interengageddepressions of balata of dimensions such as to completely cover the bodywhen moulded thereon. In Figure 2' the sections are shownsubstantiallyas they appear prior to the moulding operation. After'the mouldingoperation the edges 8 of the shell are in such intimatecontact with eachother as to be practically invisible, and the sections constitute apractically continuous shell 9 of a stifi anchtough character. Thecorrugations or rough elements 5 which are impressed into -the sectionsduring the moulding operation assist in preventing any relative movementof the cover and shell during use. In the drawings 11 indicate theresultant depressions in the shell sections formed by the corrugationsand in which the corrugations register.

It will be understood that the depressions 11 are not present'in thesections.

prior to moulding.

In this instance the cover. has formed in its exterior the usualsemispherical depressions 13.

1. A golf "ball composed solely of a vulcanized spherical centre and anouter shell covering of balata, the two being permanently united by amulitiplicity of 'interengaged integralportions thereof whereby the twoare rendered relatively-non-movable in golf ball fozmed of an unwound,

permanently united by-heat, with portions of the s'hellcovering and bodyprovided with and protuberances.

A golf ball' composed of a vulcanized centre and'a balata shellcovering, the latter being in sections joined to each other and to thecentre by heat, the centre and shell covering having depressions andprotuberances interengaged by the application of the shell covering,whereby the latter is immovably united to the centre. i

In testimony whereof I have afiixed my.

signature.

HARVEY F. MITZEL.

